Classes, traits, and interfaces - 10.3.x - drupal

Introduction to classes

A lot of the PHP code in Drupal is object oriented (OO), making use of PHP classes, interfaces, and traits. See the Objected-oriented programming conventions for more information.

See also

Objected-oriented programming conventions

File

core/core.api.php, line 1518

Name	Deprecated	Object type	Namespace	File name	Summary	Direct uses	Use statements	Strings
LocaleNonInteractiveDevInstallTest		class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocaleNonInteractiveDevInstallTest.php	Tests installing in a different language with a dev version string.
LocaleNonInteractiveInstallTest		class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocaleNonInteractiveInstallTest.php	Tests installing in a different language with a non-dev version string.	1
LocalePathTest		class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocalePathTest.php	Tests you can configure a language for individual URL aliases.
LocalePluralFormatTest		class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocalePluralFormatTest.php	Tests plural handling for various languages.
LocaleProjectStorage		class	Drupal\locale	core/modules/locale/src/LocaleProjectStorage.php	Provides the locale project storage system using a key value store.		1	2
LocaleProjectStorageInterface		interface	Drupal\locale	core/modules/locale/src/LocaleProjectStorageInterface.php	Defines the locale project storage interface.	1
LocaleProjectStorageTest		class	Drupal\Tests\locale\Unit	core/modules/locale/tests/src/Unit/LocaleProjectStorageTest.php	@coversDefaultClass \Drupal\locale\LocaleProjectStorage[[api-linebreak]] @group locale @runTestsInSeparateProcesses
LocaleSettingsForm		class	Drupal\locale\Form	core/modules/locale/src/Form/LocaleSettingsForm.php	Configure locale settings for this site.			1
LocalesLocationAddIndexUpdateTest		class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocalesLocationAddIndexUpdateTest.php	Tests Locale update functions.
LocaleStringIsSafeTest		class	Drupal\Tests\locale\Kernel	core/modules/locale/tests/src/Kernel/LocaleStringIsSafeTest.php	Tests locale translation safe string handling.
LocaleStringTest		class	Drupal\Tests\locale\Kernel	core/modules/locale/tests/src/Kernel/LocaleStringTest.php	Tests the locale string storage, string objects and data API.
LocaleTest		class	Drupal\Tests\locale\Unit	core/modules/locale/tests/src/Unit/LocaleTest.php	@coversDefaultClass \Drupal\locale\Locale[[api-linebreak]] @group Cache
LocaleTranslatedSchemaDefinitionTest		class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocaleTranslatedSchemaDefinitionTest.php	Adds and configures languages to check field schema definition.
LocaleTranslateStringTourTest		class	Drupal\Tests\tour\Functional\Locale	core/modules/tour/tests/src/Functional/Locale/LocaleTranslateStringTourTest.php	Tests the Translate Interface tour.
LocaleTranslation		class	Drupal\locale	core/modules/locale/src/LocaleTranslation.php	String translator using the locale module.		2	2
LocaleTranslation		class	Drupal\locale\Plugin\QueueWorker	core/modules/locale/src/Plugin/QueueWorker/LocaleTranslation.php	Executes interface translation queue tasks.
LocaleTranslationCacheTag		class	Drupal\locale\EventSubscriber	core/modules/locale/src/EventSubscriber/LocaleTranslationCacheTag.php	A subscriber invalidating cache tags when translating a string.			2
LocaleTranslationChangeProjectVersionTest		class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocaleTranslationChangeProjectVersionTest.php	Tests how translations are handled when a project gets updated.
LocaleTranslationDownloadTest		class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocaleTranslationDownloadTest.php	Tests locale translation download.
LocaleTranslationProjectsTest		class	Drupal\Tests\locale\Kernel	core/modules/locale/tests/src/Kernel/LocaleTranslationProjectsTest.php	Tests locale translation project handling.
LocaleTranslationTest		class	Drupal\Tests\locale\Unit	core/modules/locale/tests/src/Unit/LocaleTranslationTest.php	@coversDefaultClass \Drupal\locale\LocaleTranslation[[api-linebreak]] @group locale
LocaleTranslationTest		class	Drupal\Tests\locale\Kernel	core/modules/locale/tests/src/Kernel/LocaleTranslationTest.php	@coversDefaultClass \Drupal\locale\LocaleTranslation[[api-linebreak]] @group locale
LocaleTranslationUiTest		class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocaleTranslationUiTest.php	Tests the validation of translation strings and search results.
LocaleUpdateBase		abstract class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocaleUpdateBase.php	Base class for testing updates to string translations.	5
LocaleUpdateCronTest		class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocaleUpdateCronTest.php	Tests for using cron to update project interface translations.
LocaleUpdateDevelopmentReleaseTest		class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocaleUpdateDevelopmentReleaseTest.php	Test for proper version fallback in case of a development release.
LocaleUpdateInterfaceTest		class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocaleUpdateInterfaceTest.php	Tests for the user interface of project interface translations.
LocaleUpdateTest		class	Drupal\Tests\locale\Kernel	core/modules/locale/tests/src/Kernel/LocaleUpdateTest.php	Tests for updating the interface translations of projects.
LocaleUpdateTest		class	Drupal\Tests\locale\Functional	core/modules/locale/tests/src/Functional/LocaleUpdateTest.php	Tests for updating the interface translations of projects.
LocalReadOnlyStream		abstract class	Drupal\Core\StreamWrapper	core/lib/Drupal/Core/StreamWrapper/LocalReadOnlyStream.php	Defines a read-only Drupal stream wrapper base class for local files.	1	1
LocalRedirectResponse		class	Drupal\Core\Routing	core/lib/Drupal/Core/Routing/LocalRedirectResponse.php	Provides a redirect response which cannot redirect to an external URL.		3
LocalStream		abstract class	Drupal\Core\StreamWrapper	core/lib/Drupal/Core/StreamWrapper/LocalStream.php	Defines a Drupal stream wrapper base class for local files.	6	4
LocalTaskDefault		class	Drupal\Core\Menu	core/lib/Drupal/Core/Menu/LocalTaskDefault.php	Default object used for LocalTaskPlugins.	6	6	4
LocalTaskDefaultTest		class	Drupal\Tests\Core\Menu	core/tests/Drupal/Tests/Core/Menu/LocalTaskDefaultTest.php	@coversDefaultClass \Drupal\Core\Menu\LocalTaskDefault[[api-linebreak]] @group Menu
LocalTaskIntegrationTestBase		abstract class	Drupal\Tests\Core\Menu	core/tests/Drupal/Tests/Core/Menu/LocalTaskIntegrationTestBase.php	Defines a base unit test for testing existence of local tasks.	13	13
LocalTaskInterface		interface	Drupal\Core\Menu	core/lib/Drupal/Core/Menu/LocalTaskInterface.php	Defines an interface for menu local tasks.	1	1
LocalTaskManager		class	Drupal\Core\Menu	core/lib/Drupal/Core/Menu/LocalTaskManager.php	Provides the default local task manager using YML as primary definition.		1	2
LocalTaskManagerInterface		interface	Drupal\Core\Menu	core/lib/Drupal/Core/Menu/LocalTaskManagerInterface.php	Manages discovery and instantiation of menu local task plugins.	1	2
LocalTaskManagerTest		class	Drupal\Tests\Core\Menu	core/tests/Drupal/Tests/Core/Menu/LocalTaskManagerTest.php	@coversDefaultClass \Drupal\Core\Menu\LocalTaskManager[[api-linebreak]] @group Menu
LocalTasksBlock		class	Drupal\Core\Menu\Plugin\Block	core/lib/Drupal/Core/Menu/Plugin/Block/LocalTasksBlock.php	Provides a "Tabs" block to display the local tasks.
LocalTasksTest		class	Drupal\Tests\system\Functional\Menu	core/modules/system/tests/src/Functional/Menu/LocalTasksTest.php	Tests local tasks derived from router and added/altered via hooks.
LocalTaskTest		class	Drupal\menu_test\Plugin\Derivative	core/modules/system/tests/modules/menu_test/src/Plugin/Derivative/LocalTaskTest.php				1
LocalTaskTestWithUnsafeTitle		class	Drupal\menu_test\Plugin\Derivative	core/modules/system/tests/modules/menu_test/src/Plugin/Derivative/LocalTaskTestWithUnsafeTitle.php	Test derivative to check local task title escaping.			1
Lock		final class	Drupal\Core\TempStore	core/lib/Drupal/Core/TempStore/Lock.php	Provides a value object representing the lock from a TempStore.		4
LockAcquiringException		class	Drupal\Core\Lock	core/lib/Drupal/Core/Lock/LockAcquiringException.php	LockAcquiringException is thrown when a lock cannot be acquired.		5
LockBackendAbstract		abstract class	Drupal\Core\Lock	core/lib/Drupal/Core/Lock/LockBackendAbstract.php	Non backend related common methods implementation for lock backends.	1
LockBackendAbstractTest		class	Drupal\Tests\Core\Lock	core/tests/Drupal/Tests/Core/Lock/LockBackendAbstractTest.php	@coversDefaultClass \Drupal\Tests\Core\Lock\LockBackendAbstractTest[[api-linebreak]] @group Lock
LockBackendInterface		interface	Drupal\Core\Lock	core/lib/Drupal/Core/Lock/LockBackendInterface.php	Lock backend interface.	4	32
LockFunctionalTest		class	Drupal\Tests\system\Functional\Lock	core/modules/system/tests/src/Functional/Lock/LockFunctionalTest.php	Confirm locking works between two separate requests.
LockTest		class	Drupal\KernelTests\Core\Lock	core/tests/Drupal/KernelTests/Core/Lock/LockTest.php	Tests the Database lock backend.

Other projects

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.